Vibrator for sieves.



A. n. HUGHES. VIBRATOR FOR SIEVES.

APPLICATION FILED SEPT-2|. 19! 7- Patented Dec. 4, 1917.

ARTHUR D. HUGHES, F WAYLAND, MICHIGAN.

vrsrwron ron sIEvEs' aiaoae.

others skilled in the art to which it apper-.

tains to make and use the same, reference -.be1ng had to theaccompanying drawings, and to the letters and figures. of referencemarked thereon, which form a part of this specification.

i This invention relates to new and useful improvements of vibratingsieve and the object in view is to produce a simple and eflicientapparatus for dispensing .with the usual eccentrics used in connectionwith rapidly vibrating sieves and consists essentially 1n the provisionof adjustable weights mounted upon a rotatable shaft connected to thesieve, whereby the vibratory movement of ,the latter may be regulated,and provision of-means for causing the sieve to move only in'twodirections.

and e cient device of this nature, havmg various details ofconstruction, combinations and arrangements of parts which will behereinafter fully described, shown in the accompanying drawings and thendefined specifically in the appended claim? I illustrate my invention inthe accompanying drawings. which, with the letters of reference markedthereon, form a part of this specification and in which:

Figure 1 is a side elevation of my inven- 40 tion,

Fig. 2 is a top plan view, and Fig. 3 is a detalled sectional viewthrough an ad'ustable weight.

Re erence now being bad to the details of the drawings by letters:

A designates a base, having springs B fastened at their lower, endsthereto, and C Specification of Letters Patent.

The flpresent invention comprises a simple Patented Dec. 4, 91m.

Application filed September 21, 1917. Serial No. 192,508.

is a sieve to which the upper ends of said springs are fastened at theopposite ends, said springs being of different lengths and disposed atan inclination. A shaft E is journaled in bearings F upon the under sideof the sieve and to which a pulley H is keyed, and to which power isapplied from any suitable source. Adjustable weights, designated byletter K, are provided with elongated slots K adapted to receive theshaft, upon whichthey are mounted. Set screws N are mounted in threadedapertures in said weights and are adaptedto engage the portions of theshafts upon which the weights are; mounted, for the purpose of holdingthe latter in different relative positions, according as it may bedesired to regulate the vibratory movement of the sieve. In the event ofit being desired to minimize the vibratory movement the weights aremoved so that the shaft will be positioned adjacent to-the center of theweight, whereas, if an increased vibratory movement is desired, theweights are adjusted so that the shaft will be positioned at or nearcorresponding ends of the slots, and thereby causing, by centrifugalforce, the

desired vibratory movement to the sieve.

What I claim to be new is;

A member, yielding support upon wh1ch the same. is mounted at aninclination, a shaft journaled in suitable bearings secured to" themember, weights having elongated \slots therein through which said shaftpasses, said weights having longitudinal apertures in alinement witheach other, the walls of which are threaded, adjusting screws mounted insaid threaded aperturesand adapted to bear against said shaft at pointsdiametrically opposite.

In testimony whereof I hereunto aflix my signaturein presence of twowitnesses.

' L. P. RENO.

